Cp*Co(<scp>iii</scp>)-catalyzed C–H amination/annulation cascade of sulfoxonium ylides with anthranils for the synthesis of indoloindolones
作者:Yogesh N. Aher、Amit B. Pawar
DOI:10.1039/d1cc02817k
日期:——
Cp*Co(III)-catalyzed [4+1] annulation of sulfoxonium ylides with anthranils has been developed for the synthesis of indole–indolone scaffolds. The dual functionality of anthranils was exploited, wherein the nitrogen has been used for C–H amination and the aldehyde group was utilized in the subsequent intramolecular aldol condensation to furnish the corresponding annulated products.
Cp*Co( III )-催化的锍叶立德与邻氨基苯甲酸的[4+1]环化已被开发用于合成吲哚-吲哚酮支架。利用了邻氨基苯甲酸的双重功能,其中氮用于 C-H 胺化,醛基用于随后的分子内醇醛缩合以提供相应的环状产物。
Tandem Rh(III)-Catalyzed C–H Amination/Annulation Reactions: Synthesis of Indoloquinoline Derivatives in Water
作者:Liangliang Shi、Baiquan Wang
DOI:10.1021/acs.orglett.6b01234
日期:2016.6.17
Rh(III)-catalyzed synthetic method for indoloquinoline derivatives from readily available indoles and isoxazoles was developed. This annulation procedure undergoes tandem C–H activation, cyclization, and condensation steps. In this domino cyclization reaction, water is an efficient solvent. A catalytically competent five-membered rhodacycle has been isolated and characterized, thus revealing a key intermediate